code: def book_car(request_id: str) -> str:
      car_reservation_id = make_request("book_car", request_id)
      return car_reservation_id
  
file_path: ray/python/ray/workflow/examples/comparisons/cadence/trip_booking_workflow.py
imports: from typing import List, Tuple, Optional
  import ray
  from ray import workflow
label_desc: Use image node_id 3 for calling a global function with example usage: book_car(request_id) and returns: car_reservation_id